David Bardsley

Business Development, Ellington-DTD

David Bardsley P.G. has over thirty-six years of environmental drilling experience working in a variety of settings across the United States. Mr. Bardsley earned a Bachelor of Science degree in Geology & Geophysics along with a Communications Minor (1984) from the University of Missouri-Rolla. He started his career as a drill rig helper advancing through various technical and managerial positions in both small and large drilling companies. He was an early leader in the use of horizontal drilling to solve environmental and water supply challenges and has authored/co-authored over twenty papers on horizontal environmental drilling methodology. David has been directly involved in the design and oversight for the installation of hundreds of horizontal environmental and water supply wells.

He is a licensed well driller in Texas, Arizona and Louisiana and holds RG/PG certifications in Texas, Missouri, Louisiana and Tennessee. Mr. Bardsley is a strong proponent of education and has served as a short course instructor at Battelle environmental conferences and University of Wisconsin Madison along with presenting environmental drilling training to students at University of Arizona and University of Louisiana Lafayette.

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Horizontal Directional Drilling for Non-Traditional Applications

Horizontal directional drilling for non-traditional applications has its roots starting in the 1930’s oil field technology. In the 1970’s, the “river crossing” or HDD technology started in the central valley of California. The first documented use of the technology for environmental applications was in 1987 in the State of Washington. Since that time HDD has been utilized for a wide variety of uses outside the utility/pipeline industries. Nearly all environmental remediation remedies can be applied using HDD technology. Geotechnical applications include dewatering, slope stability and soil sampling. Successful uses of HDD for non-traditional activities requires proper engineering design along with an understanding of subsurface geologic conditions.

Horizontal wells have now been utilized for coal combustion products (CCP) remediation activities. HDD wells have been completed in a dry stacked basin to dewater ash products and under traditional impoundments to serve as groundwater containment and control.

This presentation will provide a brief overview of the HDD well installation technology along with details of two projects where horizontal wells were utilized at ash basin sites.